"Hello Mr. Johnson, this is Boe Jow and first of all I would like to emphasize that we are not trying to sell you anything, we would simply like to offer you a free estimate for a new credit card."

"Could you please take this number off of your call list?"

At this point the Tele-marketer is obligated by law to do as you ask and hang up.

"Yessir, goodbye."

It isn't necessary to torment the poor guy who's on the phone all day to earn minimum wage.